2003 YAMAHA TZR50 coolant reservoir

EAU15603
Pre-operation check list
PRE-OPERATION CHECKS
4-2
4
ITEM CHECKS PAGE
• Check fuel level in fuel tank.
Fuel• Refuel if necessary.3-5
• Check fuel line for leakage.
• Check oil level in oil tank.
2-stroke engine oil• If necessary, add recommended oil to specified level. 3-6
• Check vehicle for oil leakage.
Transmission oil• Check oil level in transmission case.
• If necessary, add recommended oil to specified level.6-6
• Check coolant level in reservoir.
Coolant• If necessary, add recommended coolant to specified level. 6-8
• Check cooling system for leakage.
• Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic system.
• Check lever free play.
• Adjust if necessary.
Front brake• Check brake pads for wear. 6-14
• Replace if necessary.
• Check fluid level in reservoir.
• If necessary, add recommended brake fluid to specified level.
• Check hydraulic system for leakage.
• Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic system.
• Check brake pads for wear.
Rear brake• Replace if necessary. 6-14
• Check fluid level in reservoir.
• If necessary, add recommended brake fluid to specified level.
• Check hydraulic system for leakage.
• Check operation.
Clutch• Lubricate cable if necessary.
6-12
• Check lever free play.
• Adjust if necessary.
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EAU20170
To check the coolant level
1. Place the vehicle on a level surfa-
ce and hold it in an upright posi-
tion.
NOTE:
The coolant level must be chec-
ked on a cold engine since the
level varies with engine tempera-
ture.
Make sure that the vehicle is
positioned straight up when
checking the coolant level. A
slight tilt to the side can result in
a false reading.
1. Panel
2. Remove panel (1). (See page 6-8.)
3. Check the coolant level in the
coolant reservoir.
NOTE:
The coolant should be between the
minimum and maximum level marks.
4. If the coolant is at or below the
minimum level mark, open the
reservoir cap, add coolant to the
maximum level mark, and then
close the reservoir cap.
ECA10470
CAUTION
If coolant is not available, use
distilled water or soft tap water
instead. Do not use hard water
or salt water since it is harmful
to the engine.
If water has been used instead
of coolant, replace it with coo-
lant as soon as possible, other-
wise the engine may not be
sufficiently cooled and the coo-
ling system will not be protec-
ted against frost and corrosion.
If water has been added to the
coolant, have a Yamaha dealer
check the antifreeze content of
the coolant as soon as possible,
otherwise the effectiveness of
the coolant will be reduced.
EWA10380
s s
WARNING
Never attempt to remove the radia-
tor cap when the engine is hot.
5. Install the panel.
Coolant reservoir capacity:
0,45 L (0.39 Imp.qt)
6
PERIODIC MAINTENANCE AND MINOR REPAIR
6-8
MIN MAX
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Engine overheatingEWA10400
s s
WARNING
Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.
After removing the radiator cap retaining bolt, place a thick rag, like a towel, over the radiator cap, and then
slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the his-
sing sound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-25
6Wait until the
engine has cooled.Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.
The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.
Add coolant. (See NOTE.)
Start the engine. If the engine overheats again, have a
Yamaha dealer check and repair the cooling system.
There is
leakage.
There is
no leakage.
NOTE:
If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended
coolant as soon as possible.
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EAU26339
Dimensions
Overall length
2007 mm
Overall width
675 mm
Overall height
1065 mm
Seat height
815 mm
Wheelbase
1330 mm
Ground clearance
144 mm
Minimum turning radius
2900 mm
Weight
With oil and fuel
124.2 kg
Engine
Engine type
Liquid cooled 2-stroke
Cylinder arrangement
Forward-inclined single cylinder
Displacement
49.7 cm
3
Bore x stroke
40.3 x 39.0 mm
Compression ratio
6.85 :1
Starting system
Electric starter
Lubrication system
Separate lubrication (Yamaha autolube)
Transmission oil
Oil change quantity
0.75 L
Coolant reservoir capacity (up to the maxi-
mum level mark)
0.71 L
Radiator capacity (including all routes)
0.70 L
Air filter element
Wet element
Fuel
Fuel tank capacity
13.8 L
Fuel reserve amount
2.2 L
Carburetor
Manufacturer
Dell’Orto
Type x quantity
PHBN 16 NS / 1
Spark plug (s)
Manufacturer/model
NGK/BR9ES
Spark plug gap
0.6-0.7 mm
Clutch type
Wet, multiple-disc
Transmission
Primary reduction system
Helical gear
Primary reduction ratio
71 x 20 (3.550)
Secondary reduction system
Chain driveSecondary reduction ratio
47 x 11 (4.270)
Transmission type
Constant mesh 6-speed
Gear ratio
1st
36 x 12 (3.000)
2nd
33 x 16 (2.062)
3rd
29 x 19 (1.526)
4th
27 x 22 (1.227)
5th
25 x 24 (1.041)
6th
24 x 25 (0.960)
Chassis
Frame type
Double cradle
Caster angle
25.00 degree
Trail
92.0 mm
Front tire
Type
Tubeless
Size
100/80-17 52H
Manufacturer/model
PIRELLI
Rear tire
Type
Tubeless
8
SPECIFICATIONS
8-1
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